src/px/ra_bmp.c

#ifndef lint
static const char RCSid[] = "$Id$";
#endif
/*
 *  program to convert between RADIANCE and Windows BMP file
 */

#include  <stdio.h>
#include  "platform.h"
#include  "color.h"
#include  "resolu.h"
#include  "bmpfile.h"

int  bradj = 0;                         /* brightness adjustment */

double  gamcor = 2.2;                   /* gamma correction value */

char  *progname;

void    quiterr(const char *);
void    rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, int gry);
void    bmp2rad(BMPReader *brd, FILE *rfp, int inv);


int
main(int argc, char *argv[])
{
        char    *inpfile=NULL, *outfile=NULL;
        int     gryflag = 0;
        int     reverse = 0;
        RESOLU  rs;
        int     i;
        
        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'b':
                                gryflag = 1;
                                break;
                        case 'g':
                                gamcor = atof(argv[++i]);
                                break;
                        case 'e':
                                if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
                                        goto userr;
                                bradj = atoi(argv[++i]);
                                break;
                        case 'r':
                                reverse = !reverse;
                                break;
                        case '\0':
                                break;
                        default:
                                goto userr;
                        }
                else
                        break;

        if (i < argc-2)
                goto userr;

        SET_FILE_BINARY(stdin);
        SET_FILE_BINARY(stdout);
        SET_DEFAULT_BINARY();

        if (i <= argc-1 && strcmp(argv[i], "-"))
                inpfile = argv[i];

        if (i == argc-2 && strcmp(argv[i+1], "-"))
                outfile = argv[i+1];

        setcolrgam(gamcor);             /* set up conversion */

        if (reverse) {
                BMPReader       *rdr;
                                        /* open BMP file or stream */
                if (inpfile != NULL)
                        rdr = BMPopenInputFile(inpfile);
                else
                        rdr = BMPopenInputStream(stdin);
                        
                if (rdr == NULL) {
                        fprintf(stderr, "%s: cannot open or recognize BMP\n",
                                inpfile != NULL ? inpfile : "<stdin>");
                        exit(1);
                }
                                        /* open Radiance output */
                if (outfile != NULL && freopen(outfile, "w", stdout) == NULL) {
                        fprintf(stderr, "%s: cannot open for output\n",
                                        outfile);
                        exit(1);
                }
                                        /* put Radiance header */
                newheader("RADIANCE", stdout);
                printargs(i, argv, stdout);
                fputformat(COLRFMT, stdout);
                putchar('\n');
                rs.xr = rdr->hdr->width;
                rs.yr = rdr->hdr->height;
                rs.rt = YMAJOR;
                if (rdr->hdr->yIsDown || inpfile != NULL)
                        rs.rt |= YDECR;
                fputsresolu(&rs, stdout);
                                        /* convert file */
                bmp2rad(rdr, stdout, !rdr->hdr->yIsDown && inpfile!=NULL);
                                        /* flush output */
                BMPcloseInput(rdr);     /* COMMENT OUT LATER */
                if (fflush(stdout) < 0)
                        quiterr("error writing Radiance output");
        } else {
                BMPHeader       *hdr;
                BMPWriter       *wtr;
                                        /* open Radiance input */
                if (inpfile != NULL && freopen(inpfile, "r", stdin) == NULL) {
                        fprintf(stderr, "%s: cannot open input file\n",
                                        inpfile);
                        exit(1);
                }
                                        /* get header info. */
                if (checkheader(stdin, COLRFMT, NULL) < 0 ||
                                !fgetsresolu(&rs, stdin))
                        quiterr("bad Radiance picture format");
                                        /* initialize BMP header */
                if (gryflag)
                        hdr = BMPmappedHeader(numscans(&rs),
                                                scanlen(&rs), 0, 256);
                else
                        hdr = BMPtruecolorHeader(numscans(&rs),
                                                scanlen(&rs), 0);
                if (hdr == NULL)
                        quiterr("cannot initialize BMP header");
                hdr->yIsDown = (rs.rt & YDECR) && outfile == NULL;
                                        /* open BMP output */
                if (outfile != NULL)
                        wtr = BMPopenOutputFile(outfile, hdr);
                else
                        wtr = BMPopenOutputStream(stdout, hdr);
                                        /* convert file */
                rad2bmp(stdin, wtr, !hdr->yIsDown && (rs.rt&YDECR), gryflag);
                                        /* flush output */
                if (fflush((FILE *)wtr->c_data) < 0)
                        quiterr("error writing BMP output");
                BMPcloseOutput(wtr);    /* COMMENT OUT LATER */
        }
        exit(0);                        /* success */
userr:
        fprintf(stderr,
                "Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
                        progname);
        exit(1);
        return(1);      /* to keep compiler happy */
}

/* print message and exit */
void
quiterr(const char *err)
{
        if (err != NULL) {
                fprintf(stderr, "%s: %s\n", progname, err);
                exit(1);
        }
        exit(0);
}

/* convert Radiance picture to BMP */
void
rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, int gry)
{
        COLR    *scanin;
        int     y, yend, ystp;
        int     x;
                                                /* allocate scanline */
        scanin = (COLR *)malloc(bwr->hdr->width*sizeof(COLR));
        if (scanin == NULL)
                quiterr("out of memory in rad2bmp");
                                                /* convert image */
        if (inv) {
                y = bwr->hdr->height - 1;
                ystp = -1; yend = -1;
        } else {
                y = 0;
                ystp = 1; yend = bwr->hdr->height;
        }
                                                /* convert each scanline */
        for ( ; y != yend; y += ystp) {
                if (freadcolrs(scanin, bwr->hdr->width, rfp) < 0)
                        quiterr("error reading Radiance picture");
                if (bradj)
                        shiftcolrs(scanin, bwr->hdr->width, bradj);
                for (x = gry ? bwr->hdr->width : 0; x--; )
                        scanin[x][GRN] = normbright(scanin[x]);
                colrs_gambs(scanin, bwr->hdr->width);
                if (gry)
                        for (x = bwr->hdr->width; x--; )
                                bwr->scanline[x] = scanin[x][GRN];
                else
                        for (x = bwr->hdr->width; x--; ) {
                                bwr->scanline[3*x] = scanin[x][BLU];
                                bwr->scanline[3*x+1] = scanin[x][GRN];
                                bwr->scanline[3*x+2] = scanin[x][RED];
                        }
                bwr->yscan = y;
                x = BMPwriteScanline(bwr);
                if (x != BIR_OK)
                        quiterr(BMPerrorMessage(x));
        }
                                                /* free scanline */
        free((void *)scanin);
}

/* convert BMP file to Radiance */
void
bmp2rad(BMPReader *brd, FILE *rfp, int inv)
{
        COLR    *scanout;
        int     y, yend, ystp;
        int     x;
                                                /* allocate scanline */
        scanout = (COLR *)malloc(brd->hdr->width*sizeof(COLR));
        if (scanout == NULL)
                quiterr("out of memory in bmp2rad");
                                                /* convert image */
        if (inv) {
                y = brd->hdr->height - 1;
                ystp = -1; yend = -1;
        } else {
                y = 0;
                ystp = 1; yend = brd->hdr->height;
        }
                                                /* convert each scanline */
        for ( ; y != yend; y += ystp) {
                x = BMPseekScanline(y, brd);
                if (x != BIR_OK)
                        quiterr(BMPerrorMessage(x));
                for (x = brd->hdr->width; x--; ) {
                        RGBquad         rgbq = BMPdecodePixel(x, brd);
                        scanout[x][RED] = rgbq.r;
                        scanout[x][GRN] = rgbq.g;
                        scanout[x][BLU] = rgbq.b;
                }
                gambs_colrs(scanout, brd->hdr->width);
                if (bradj)
                        shiftcolrs(scanout, brd->hdr->width, bradj);
                if (fwritecolrs(scanout, brd->hdr->width, rfp) < 0)
                        quiterr("error writing Radiance picture");
        }
                                                /* clean up */
        free((void *)scanout);
}
Revision:	2.1
Committed:	Fri Mar 26 03:11:50 2004 UTC (21 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Log Message:	Created ra_bmp program to convert between Radiance pictures and Windows BMP
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2			static const char RCSid[] = "$Id$";
3			#endif
4			/*
5			* program to convert between RADIANCE and Windows BMP file
6			*/
7
8			#include <stdio.h>
9			#include "platform.h"
10			#include "color.h"
11			#include "resolu.h"
12			#include "bmpfile.h"
13
14			int bradj = 0; /* brightness adjustment */
15
16			double gamcor = 2.2; /* gamma correction value */
17
18			char *progname;
19
20			void quiterr(const char *);
21			void rad2bmp(FILE rfp, BMPWriter bwr, int inv, int gry);
22			void bmp2rad(BMPReader brd, FILE rfp, int inv);
23
24
25			int
26			main(int argc, char *argv[])
27			{
28			char inpfile=NULL, outfile=NULL;
29			int gryflag = 0;
30			int reverse = 0;
31			RESOLU rs;
32			int i;
33
34			progname = argv[0];
35
36			for (i = 1; i < argc; i++)
37			if (argv[i][0] == '-')
38			switch (argv[i][1]) {
39			case 'b':
40			gryflag = 1;
41			break;
42			case 'g':
43			gamcor = atof(argv[++i]);
44			break;
45			case 'e':
46			if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
47			goto userr;
48			bradj = atoi(argv[++i]);
49			break;
50			case 'r':
51			reverse = !reverse;
52			break;
53			case '\0':
54			break;
55			default:
56			goto userr;
57			}
58			else
59			break;
60
61			if (i < argc-2)
62			goto userr;
63
64			SET_FILE_BINARY(stdin);
65			SET_FILE_BINARY(stdout);
66			SET_DEFAULT_BINARY();
67
68			if (i <= argc-1 && strcmp(argv[i], "-"))
69			inpfile = argv[i];
70
71			if (i == argc-2 && strcmp(argv[i+1], "-"))
72			outfile = argv[i+1];
73
74			setcolrgam(gamcor); /* set up conversion */
75
76			if (reverse) {
77			BMPReader *rdr;
78			/* open BMP file or stream */
79			if (inpfile != NULL)
80			rdr = BMPopenInputFile(inpfile);
81			else
82			rdr = BMPopenInputStream(stdin);
83
84			if (rdr == NULL) {
85			fprintf(stderr, "%s: cannot open or recognize BMP\n",
86			inpfile != NULL ? inpfile : "<stdin>");
87			exit(1);
88			}
89			/* open Radiance output */
90			if (outfile != NULL && freopen(outfile, "w", stdout) == NULL) {
91			fprintf(stderr, "%s: cannot open for output\n",
92			outfile);
93			exit(1);
94			}
95			/* put Radiance header */
96			newheader("RADIANCE", stdout);
97			printargs(i, argv, stdout);
98			fputformat(COLRFMT, stdout);
99			putchar('\n');
100			rs.xr = rdr->hdr->width;
101			rs.yr = rdr->hdr->height;
102			rs.rt = YMAJOR;
103			if (rdr->hdr->yIsDown \|\| inpfile != NULL)
104			rs.rt \|= YDECR;
105			fputsresolu(&rs, stdout);
106			/* convert file */
107			bmp2rad(rdr, stdout, !rdr->hdr->yIsDown && inpfile!=NULL);
108			/* flush output */
109			BMPcloseInput(rdr); /* COMMENT OUT LATER */
110			if (fflush(stdout) < 0)
111			quiterr("error writing Radiance output");
112			} else {
113			BMPHeader *hdr;
114			BMPWriter *wtr;
115			/* open Radiance input */
116			if (inpfile != NULL && freopen(inpfile, "r", stdin) == NULL) {
117			fprintf(stderr, "%s: cannot open input file\n",
118			inpfile);
119			exit(1);
120			}
121			/* get header info. */
122			if (checkheader(stdin, COLRFMT, NULL) < 0 \|\|
123			!fgetsresolu(&rs, stdin))
124			quiterr("bad Radiance picture format");
125			/* initialize BMP header */
126			if (gryflag)
127			hdr = BMPmappedHeader(numscans(&rs),
128			scanlen(&rs), 0, 256);
129			else
130			hdr = BMPtruecolorHeader(numscans(&rs),
131			scanlen(&rs), 0);
132			if (hdr == NULL)
133			quiterr("cannot initialize BMP header");
134			hdr->yIsDown = (rs.rt & YDECR) && outfile == NULL;
135			/* open BMP output */
136			if (outfile != NULL)
137			wtr = BMPopenOutputFile(outfile, hdr);
138			else
139			wtr = BMPopenOutputStream(stdout, hdr);
140			/* convert file */
141			rad2bmp(stdin, wtr, !hdr->yIsDown && (rs.rt&YDECR), gryflag);
142			/* flush output */
143			if (fflush((FILE *)wtr->c_data) < 0)
144			quiterr("error writing BMP output");
145			BMPcloseOutput(wtr); /* COMMENT OUT LATER */
146			}
147			exit(0); /* success */
148			userr:
149			fprintf(stderr,
150			"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n",
151			progname);
152			exit(1);
153			return(1); /* to keep compiler happy */
154			}
155
156			/* print message and exit */
157			void
158			quiterr(const char *err)
159			{
160			if (err != NULL) {
161			fprintf(stderr, "%s: %s\n", progname, err);
162			exit(1);
163			}
164			exit(0);
165			}
166
167			/* convert Radiance picture to BMP */
168			void
169			rad2bmp(FILE rfp, BMPWriter bwr, int inv, int gry)
170			{
171			COLR *scanin;
172			int y, yend, ystp;
173			int x;
174			/* allocate scanline */
175			scanin = (COLR )malloc(bwr->hdr->widthsizeof(COLR));
176			if (scanin == NULL)
177			quiterr("out of memory in rad2bmp");
178			/* convert image */
179			if (inv) {
180			y = bwr->hdr->height - 1;
181			ystp = -1; yend = -1;
182			} else {
183			y = 0;
184			ystp = 1; yend = bwr->hdr->height;
185			}
186			/* convert each scanline */
187			for ( ; y != yend; y += ystp) {
188			if (freadcolrs(scanin, bwr->hdr->width, rfp) < 0)
189			quiterr("error reading Radiance picture");
190			if (bradj)
191			shiftcolrs(scanin, bwr->hdr->width, bradj);
192			for (x = gry ? bwr->hdr->width : 0; x--; )
193			scanin[x][GRN] = normbright(scanin[x]);
194			colrs_gambs(scanin, bwr->hdr->width);
195			if (gry)
196			for (x = bwr->hdr->width; x--; )
197			bwr->scanline[x] = scanin[x][GRN];
198			else
199			for (x = bwr->hdr->width; x--; ) {
200			bwr->scanline[3*x] = scanin[x][BLU];
201			bwr->scanline[3*x+1] = scanin[x][GRN];
202			bwr->scanline[3*x+2] = scanin[x][RED];
203			}
204			bwr->yscan = y;
205			x = BMPwriteScanline(bwr);
206			if (x != BIR_OK)
207			quiterr(BMPerrorMessage(x));
208			}
209			/* free scanline */
210			free((void *)scanin);
211			}
212
213			/* convert BMP file to Radiance */
214			void
215			bmp2rad(BMPReader brd, FILE rfp, int inv)
216			{
217			COLR *scanout;
218			int y, yend, ystp;
219			int x;
220			/* allocate scanline */
221			scanout = (COLR )malloc(brd->hdr->widthsizeof(COLR));
222			if (scanout == NULL)
223			quiterr("out of memory in bmp2rad");
224			/* convert image */
225			if (inv) {
226			y = brd->hdr->height - 1;
227			ystp = -1; yend = -1;
228			} else {
229			y = 0;
230			ystp = 1; yend = brd->hdr->height;
231			}
232			/* convert each scanline */
233			for ( ; y != yend; y += ystp) {
234			x = BMPseekScanline(y, brd);
235			if (x != BIR_OK)
236			quiterr(BMPerrorMessage(x));
237			for (x = brd->hdr->width; x--; ) {
238			RGBquad rgbq = BMPdecodePixel(x, brd);
239			scanout[x][RED] = rgbq.r;
240			scanout[x][GRN] = rgbq.g;
241			scanout[x][BLU] = rgbq.b;
242			}
243			gambs_colrs(scanout, brd->hdr->width);
244			if (bradj)
245			shiftcolrs(scanout, brd->hdr->width, bradj);
246			if (fwritecolrs(scanout, brd->hdr->width, rfp) < 0)
247			quiterr("error writing Radiance picture");
248			}
249			/* clean up */
250			free((void *)scanout);
251			}